Oil-cup cover.



J. STURROCK.

OIL CUP COVER.

APPLICATION mm SEPT. 18. I913.

1,21 1,893. Patented Jan. 9,1917.

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JOHN STURROCK, OF- CI-IICAGO, ILLINOIS, ASSIGNOR TO INTERNATIONAL KARI/ESTER COMPANY OF NEW JERSEY, A CORPORATION OF NEW JERSEY.

OIL-CU]? COVER.

Specification of Letters Patent.

Patented Jan. 9, 1917.

Application filed September 18, 1913. Serial No. 790,457.

To all whom it may concern 7 Be it known that I, JOHN STURROGK, a subject of the King-of Great Britain, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Oil-Cup Covers, of which the following is a full, clear, and exact specification.

My invention relates to oil cup covers or the like.

It has for its object to provide an improved mechanism whereby an oil cup or other cover is normally maintained closed in such a manner as effectually to prevent the entry of foreign matter to the aperture closed thereby and at the same time to permit of access to the aperture whenever desired.

A further and more specific object of my invention is to provide improved resilient cover controlling connections operatively connected to the cover and so disposed with respect to the support as to be protected thereby.

I preferably attain these objects by operatively connecting a spindle to the cover at a point between the ends of the latter and extending the free end of this spindle through an opening in the support located at one side of the oil or other aperture, a coiled spring carried on the free end of the spindle acting between the latter and the support in such a manner as normally to maintain the cover in its closed position.

In the accompanying drawings I have shown for purposes of illustration one embodiment which my invention may assume in practice, illustrating the same used in connection with a great drill boot.

In these drawings :Figure l is a top plan view of a boot equipped with my improvement; Fig. 2 is a side elevation of the same, a section of the boot being broken away to show the oil cup mechanism.

In this construction a boot 1 of standard construction is provided with a vertically extending oil duct 2 leading down through the same to the shaft 3. Covering the upper end of this duct is an oil cup cover 4. As shown, this cover is provided with a paddlelike duct covering end extending beyond the edges of the boot casting; and a narrower tail portion 5 having a rounded rear end and downwardly extending substantially parallel sides which fit around the top of the boot and extend downward along the sides of the same. Secured by means of a cotter 6 in an opening formed at a point substantially midway between the ends of this tail portion is a normally vertically extending spindle 7 which extends downward through a hole 8 in the top of the boot shank to a vertically disposed recess or bore 9 of larger diameter, arranged coaxially therewith and disposed parallel to the duct 2. Within this bore 9 is housed a coiled spring 10, which encircles the spindle 7 and is positioned between the upper end wall of the recess 9 and a head or button 11, on the lower end of the spindle, in such a manner that the upper end of the spindle is normally pulled downward. Obviously, when desired, access to the oil duct may be obtained by flipping the paddle-like end of the cover backward and when the cover is released it will automatically return to its covering position (Fig. 2).

It is to be noted that in this construction the spring is housed in the boot in such a manner as to protect the same, and that at the same time the spring is not in the way at the top of the boot. Further, the whole construction may be very readily and cheaply constructed, and inserted or removed, as desired, with great facility.

While I have in this application specifically described one embodiment which my invention may assume in practice, it is, of course, to be understood that the form thereof shown herein is used for purposes of illustration and that the invention may be modified and embodied in other forms without departing from its spirit.

What I claim as my invention, and desire to secure by Letters Patent, is;

1. In combination, a support having an oil duct therein and a bore adjacent said duct having a restricted opening, a plunger carried in said bore and protruding through said opening, resilient means in said bore normally tending to withdraw the plunger from said opening, and a cover for said duct operatively connected to the protruding end of said plunger in a manner permitting said cover to be turned upon said plunger in a vertical plane.

2. In combination, a support having a plurality of apertures therein, a spring-pressed plunger seated in one of said apertures and protruding therefrom, a cover for the other aperture having an opening therein loosely receiving the protruding end of said springpressed plunger, and means Whereby a turning movement of said cover upon said plunger in a vertical plane may reciprocate said plunger in its aperture.

3. In combination, a support having an oil duct therein and abore disposed adjacent and substantially parallel thereto, said bore having a restricted outlet in one end of the same, a plunger having an enlarged end seated in said bore and having its opposite end extending through the restricted opening in the end of the same, a spring surrounding' said plunger and having its opposite ends engaging/the enlarged end of the plunger and the end Wall of the bore surrounding said restricted opening, and an oil cup cover operatively connected to the protruding end of said plunger in a manner permitting said cover to be turned upon said plunger in a vertical plane parallel with the axes of said oil duct and said bore and extending over the adjacent end of said oil duct in a manner permitting said cover to be turned upon said spindle in a plane parallel With the axes of said oil' duct and said bore.

4. In combination, a support having an oil duct therein and a bore disposed adjacent and substantially parallel to said oil duct, said bore having a restricted outlet in one end of the same, a spindle having an enlarged end seated in said bore and having its opposite end extending through the restricted opening in the end of the same, a spring surrounding said spindle and having its opposite ends engaging the enlarged end of said spindle and an end Wall of the bore surrounding said restricted opening, an oil cup cover having an opening therein through Which the protruding end of said spindle extends, said oil cup cover extending over the adjacent end of said oil duct, and means on the protruding end of said spindle for attaching said cover thereto. I

In testimony whereof I aflix my signature, in the presence of two Witnesses.

A. H. HOLMES, H. B. MUEI-ILHAUSEN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. O. 

